Production of renewable fuels by the photohydrogenation of CO2: effect of the Cu species loaded onto TiO2 photocatalysts. Issue 6 (25th January 2016)

• Record Type: Journal Article
• Authors: Chen, Bo-Ren; Nguyen, Van-Huy; Wu, Jeffrey C. S.; Martin, Reli; Kočí, Kamila
• Is Part Of: Physical chemistry chemical physics. Volume 18:Issue 6(2016)
• Page Start: 4942
• Page End: 4951
• Publication Date: 2016-01-25
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.3
• DOI: 10.1039/c5cp06999h
• Languages: English
• ISSNs: 1463-9076

Abstract

Abstract : The efficient gas phase photocatalytic hydrogenation of CO2 opens a feasible route not only to store H2 by converting it into a renewable fuel, but also to reduce the amount of the greenhouse gas CO2 in the atmosphere. Abstract : The efficient gas phase photocatalytic hydrogenation of CO2 into a desirable renewable fuel was achieved using a Cu-loaded TiO2 photocatalyst system. Enhancing the amount of Ti 3+ relative to Ti 4+ in a Cu-loaded TiO2 photocatalyst provided an excellent opportunity to promote the photohydrogenation of CO2 . The coexistence of Cu and Cu + species during the photoreaction was shown to efficiently enhance the photocatalytic activity by prolonging the lifetime of the electrons. To achieve the best photoactivity, the Cu species must be maintained at an appropriately low concentration (≤1 wt%). The highest CH4 yield obtained was 28.72 μmol g −1 . This approach opens a feasible route not only to store hydrogen by converting it into a desirable renewable fuel, but also to reduce the amount of the greenhouse gas CO2 in the atmosphere.